Shimano 105 RD-R7100 12-Speed Rear Derailleur

The Shimano 105 RD-R7100 rear derailleur is a 12-speed mechanical rear derailleur. It is for you if you are fitting or upgrading a 105 groupset and want to use cassettes with a largest sprocket of 34 or 36 teeth.

• 12-speed mechanical rear derailleur, works with cassettes with a maximum of 34 or 36 teeth
• Total capacity of 41 teeth to handle wide gear ranges
• Aluminium cage, weighing 249 g in the black version
• Standard mount, also Direct Mount compatible
• Check compatible cassettes: CS-R8101-12 only 11-34, CS-R7101-12, CS-HG710-12

Technical specifications

• Manufacturer code: IRDR7100
• Weight: 249 g (black version, 11 teeth)
• Total capacity: 41 teeth
• Maximum front difference: 16 teeth
• Largest sprocket: 34 to 36 teeth
• Smallest sprocket: 11 to 14 teeth
• Cage: Aluminium (outer and inner plates)
• Mount: Standard, Direct Mount compatible
• Compatible cassettes: CS-R8101-12 (11-34 only), CS-R7101-12, CS-HG710-12
• Compatible chains: CN-M7100, CN-M8100, CN-M9100, CN-M6100 (HG 12-speed)

Founded in 1921 in Sakai, Japan, by Shozaburo Shimano, Shimano is still based in the same city today. For cyclists, it makes drivetrains, brakes, wheels, pedals and cycling shoes. Its history in bicycle components began with the production of freewheels in 1922.